Ball-bearing.



No. 891,943. -'"PATENTE1D JUNE 3'0, 1908.

F. 0. MASON & J. W. SHANAHAN.

BALL BEARING.

APPLICATION FILED AUG. 20, 1907.

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UNITED STATES PATENT OFFICE.

FRANCIS O. MASON AND JOHN W. SHANAHAN, OF GRAND RAPIDS, MICHIGAN, ASSIGNORS TO BISSELL CARPET SWEEPER COMPANY TION OF MICHIGAN.

, OF GRAND RAPIDS, MICHIGAN, A CORPORA- BALL-BEARING:

Patented June 30, 1908.

To all whom it may concern:

Be it known that we, FRANCIS C. MASON and JOHN W. SHANAHAN, both citizens of the United States of America, residing at Grand .R-a ids, in the county of Kent and State ofMlchigan, have invented certain new and useful Im rovements in Ball-Bearings; and we do here liy declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appe'rt'ains to make and use the same.

Our invention relates to improvements in ball bearings, andmore particularly to ball bearings. for carpet sweepers, and its object is to provide a suitable compact and easily man ufactured ball bearing, adapted to operate in connection with the supporting wheels of a carpet swee er and the spring supports for the same, an it consists essentially of an annular case having a r'adial arm-and comprising two stamped sheet metal members at tached to each other, a ball race surrounding the central '0 ening, balls in the race and a collar externa ly grooved to receive the balls, havingv an axial opening to receive the hub of the wheel, all as will more fully appear by reference to the accompanying drawings, in which:

Figure 1.' is an end elevation of a carpet sweeper having our improved ball. bearings attached; Fig, 2. a plan view of the same with a portion of one wheel broken away; Fig. 3. an enlarged vertical section of one of the-wheels and the bearing for the same; and Figs. 4 and 5, details of the respective stamped sheet metal IIIGIIlbGI'SIbGfOI'G assembling.

Like numbers refer to like parts in all of the figures. v I I 1 represents the case of a'carpet sweeper; 2 the guard bar of the same supporting the brush shaft 3. 4 supporting wheels carrying the carpet swee er and engaging the brush openings (not shown) in the ends of the sweeper. casein which openings they are laterally movable and do not support the said case, which latter'is supported on the s ring supports 11 attached to the case by eing inserted in slots in the bail. guards 14 and secured therein bv clips 12.

5 represents the hubs of the wheels, each of which is made externally concentric with the axis of the wheel, and inserted in a sleeve 6 surrounding the hub and rotat-ive therewith, this sleeve having an external'groove traversed by balls 9 inclosed in the ball races of the case formed at 8 and 13 in the respective opposing portions of the case, said case having an axial opening to receive the sleeve 6, which opening is surrounded by said ball race.

The case is substantiall annular. in shape and provided with a radia ly extended arm? perforated to pivotallyreceive the end of the spring support 11.

One of said sheet-metal members is preferably extended beyond the other all around its margin as at .15 in Fig. 4, and folded over the same to secure the two members to each other, as at 15 in Fig. 3. Thus when these case members are assembled with the balls 9 and sleeve 6 inserted therein, the balls and sleeve are retained therein and can in this condition be readil manipulated as an integral structure or p aced in the finished machine as illustrated in Fig. 1. WVe are thus able to provide a compact and satisfactory ball bearin adapted to be located within the cup-shape wheel shown, and having an arm to pivotally connect the bearing to the spring su ort 11 of the carpet sweeper.

hat we claim is':

- 1. Aball bearing for carpet sweepers, comprising a wheel having a projectin hub, a

sleeve detachablv surrounding the ub and having a circumferential groove, a case surrounding the sleeve an formed of two stamped sheet metal parts secured to each other and having radial arms adapted to be pivotally attached to the 5 ring supports of a carpet sweeper, each part avmg a ball race surrounding the sleeve, and balls in the said races and en aging the groove in the sleeve.

2. Ina bal bearing for a car at sweeper, a case comprising two stamped sheet metal members each having an axial opening, and a ball race surrounding said opening, the edge of one member being folded over the edge of the other member; balls in the ball races, and a'sleeve in said openings and having a circumferential groove engaged and traversed by the balls and an axial opening to receive the hub of a Wheel, and ineans for attaching said case to a support.

3. In a ball bearing for a carpet sweeper,

the combination of a case comprising two annular sheet metal members each havmg an .axial opening and a=ba11 race surrounding said opening, each member also having a radial and perforated arm, said members being secured to each other by folding the edge of one over the edge of the other; balls in the ball race, and a sleeve in said openings havmg a circumferential groove engaged and In testimony whereof We affix our signatures in presence of two Witnesses.

FRANCIS C. MASON. JOHN W. SHANAI-IAN. Witnesses:

PALMER A.- JONES, L. V, MoULToN. 

